CN217839769U

CN217839769U - Tunnel column type open cut tunnel structure

Info

Publication number: CN217839769U
Application number: CN202220942820.2U
Authority: CN
Inventors: 王玉龙; 邹鑫; 林国强; 孙杰; 曹拯; 沈豪
Original assignee: Xi'an Railway Survey And Design Institute Co ltd
Current assignee: Xi'an Railway Survey And Design Institute Co ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-11-18
Anticipated expiration: 2032-04-22

Abstract

The utility model relates to a tunnel column formula open cut tunnel structure. The danger of dangerous falling rocks exists above the tunnel portal, and the extension of the open cut tunnel becomes the best choice for solving the problem, but the wall outside the bias open cut tunnel is too large, so that the material waste and the construction inconvenience are caused. The structure comprises an inner side wall, a precast beam plate and an outer support; the inner side wall is vertically erected on the near-mountain side, the outer support is vertically erected on the far-mountain side, and the precast beam plate is horizontally arranged on the tops of the inner side wall and the outer support; the outer support is a latticed support system and comprises a pile foundation, a lower longitudinal beam, an upright post and an upper longitudinal beam from bottom to top, wherein the pile foundation is positioned below a ground line; and backfilling is filled on the outer side of the inner side wall and the top of the precast beam slab. The utility model discloses an outside wall changes to use longeron and the structural style of stand down, under the prerequisite of guaranteeing to protect the rockfall comprehensively, has reduced the use amount of material, reduces engineering cost, and the reinforced concrete structure sectional area is little simultaneously, to the requirement greatly reduced of topography, and it is convenient to maintain, and the practicality is strong.

Description

Tunnel column type open cut tunnel structure

Technical Field

The utility model relates to a tunnel engineering construction technical field, concretely relates to tunnel column type open cut tunnel structure.

Background

The railway and the highway are limited by terrain, need to pass through a mountain body in a tunnel engineering mode, and dangerous rocks and rocks are threatened in a section with steep terrain at a tunnel portal and above the tunnel portal, so that the operation safety of the railway and the highway is seriously influenced. In order to ensure the safety, stability and driving safety of the tunnel portal structure, protective measures need to be taken on adjacent sections of the tunnel portal to ensure the normal operation of railways and highways, but the dangerous rockfall diseases cannot be radically treated by adopting the conventional measures such as hanging an active net or a passive net.

At present, the elongated open cut tunnel is the best choice for solving the problem, but the volume of the outer wall of the bias open cut tunnel is too large, so that the material waste and the construction are inconvenient, and the requirement of the large-volume outer wall on the terrain is relatively high.

Disclosure of Invention

The utility model aims at providing a tunnel column type open cut tunnel structure to solve present bias voltage formula open cut tunnel outside wall body at least amasss too big, cause the extravagant and inconvenient scheduling problem of construction of material.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a tunnel column type open cut tunnel structure comprises an inner side wall, precast beam plates and an outer support;

the inner side wall is vertically erected on the side close to the mountain, the outer support is vertically erected on the side far from the mountain, and the precast beam plate is horizontally arranged on the tops of the inner side wall and the outer support;

the outer support is a latticed support system and comprises a pile foundation, a lower longitudinal beam, an upright post and an upper longitudinal beam from bottom to top, wherein the pile foundation is positioned below a ground line;

and backfilling soil is filled on the outer side of the inner side wall and the top of the precast beam slab.

Furthermore, the bottom of the inner side wall is positioned below the ground line, and the bottom of the inner side wall is provided with a transversely protruding expansion end.

Furthermore, the nearly mountain side at inside wall top is provided with the bellied limiting plate that makes progress, and the nearly mountain side of precast beam board sets up in the limiting plate inboard at inside wall top.

Further, the pile foundations are vertically arranged in a column longitudinally on the far mountain side;

the lower longitudinal beams are positioned at the top of the pile foundation and are longitudinally and horizontally arranged;

the upright posts are positioned above the lower longitudinal beam, are vertically arranged in a row in the longitudinal direction and correspond to the pile foundations below one by one;

the upper longitudinal beam is positioned at the top of the upright post and is longitudinally and horizontally arranged.

Furthermore, the far mountain side of the top of the upper longitudinal beam is provided with a soil retaining plate protruding upwards, and the far mountain side of the precast beam plate is arranged on the inner side of the soil retaining plate at the top of the upper longitudinal beam.

Furthermore, the inner side of the bottom of the inner side wall and the inner side of the lower longitudinal beam are both provided with a ditch and a cable trough.

Furthermore, the bottom of interior side wall expands the inboard that the end is located interior side wall bottom, and ditch and the cable duct of interior side wall bottom inboard are located the top of expanding the end.

Furthermore, the top surface of the precast beam slab is provided with a waterproof layer and is covered by backfill soil.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses a tunnel column type open cut tunnel structure mainly adopts reinforced concrete structure, and the structure is small, and especially the structural style that longeron adds the stand about the outer wall changes to use, is guaranteeing to protect down under the prerequisite of stone comprehensively, and to a great extent has reduced the use amount of material, reduces engineering cost, and the reinforced concrete structure sectional area is little simultaneously, to the requirement greatly reduced of topography, and it is convenient to maintain, and the practicality is strong.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are only some embodiments of the present invention, and for those skilled in the art, drawings of other embodiments can be obtained according to the drawings without creative efforts.

Fig. 1 is a cross-sectional view of an embodiment of the present invention.

Fig. 2 is a sectional view taken along line I-I in fig. 1.

The labels in the figure are:

1-ground line, 2-inner side wall, 3-precast beam plate, 4-upper longitudinal beam, 5-upright post, 6-lower longitudinal beam, 7-pile foundation, 8-soil retaining plate, 9-waterproof layer, 10-backfill, 11-ditch, 12-cable trough and 13-limiting plate.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are illustrated in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

In the description of this patent, it is to be understood that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise expressly specified or limited, the terms "connected," "disposed," and the like are to be construed broadly and can for example be fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

In fig. 1, a mountain is defined below the ground line 10 on the left side, the left side in the drawing is defined as a near mountain side, and the right side is defined as a far mountain side. The utility model provides a tunnel column type open cut tunnel structure can be applied to the railway tunnel, certainly, also can be applied to highway tunnel, as the open cut tunnel structure of tunnel portal, plays the guard action to dangerous rock falling rocks, makes driving environment be in under the safety environment, does not receive the threat of tunnel portal top dangerous rock falling rocks. As shown in fig. 1, the structure includes an inner side wall 2, precast girder panels 3, and an outer support. The inner side wall 2 is vertically erected on the side close to the mountain, the outer support is vertically erected on the side far from the mountain, the precast beam plates 3 are horizontally arranged on the tops of the inner side wall 2 and the outer support, and backfill soil 10 is filled on the outer side of the inner side wall 2 and the tops of the precast beam plates 3. The top surface of the precast beam slab 3 is provided with a waterproof layer 9 (which may be coated with an asphalt waterproof material or the like) covered with a backfill soil 10. And a space in the open cut tunnel structure is formed between the inner side wall 2 and the outer support and below the precast beam slab 3. The in-hole space is defined as the inside and the out-of-hole space is defined as the outside.

Referring to fig. 2, the outer support is a lattice-shaped support system, which comprises a pile foundation 7, a lower longitudinal beam 6, an upright post 5 and an upper longitudinal beam 4 from bottom to top, all of which adopt reinforced concrete structures, and the size is determined according to geological conditions and topographic conditions. The pile foundation 7 is located below the ground line 1, and the bottom of the side sill 6 is also partially located below the ground line 1. The pile foundations 7 are vertically arranged in a row longitudinally on the far mountain side, the lower longitudinal beams 6 are located at the tops of the pile foundations 7 and are horizontally arranged longitudinally, the upright posts 5 are located above the lower longitudinal beams 6 and are vertically arranged in a row and in one-to-one correspondence with the pile foundations 7 below, and the upper longitudinal beams 4 are located at the tops of the upright posts 5 and are horizontally arranged longitudinally. The cross-sectional area of the pile foundation 7 below is larger than that of the upright 5 above according to the bearing requirement. The remote mountain side at the top of the upper longitudinal beam 4 is provided with an upward convex soil retaining plate 8, and the remote mountain side of the precast beam plate 3 is arranged on the inner side of the soil retaining plate 8 at the top of the upper longitudinal beam 4. The retaining plate 8 has a vertical height, and can block the backfill soil 10 on the inner side, so as to ensure that the backfill soil 10 does not fall off.

In the embodiment, the lattice-shaped support system is used for replacing the traditional outer wall structure, so that the use amount of materials is greatly reduced, ventilation and lighting are facilitated, and the stability of the whole structure can be guaranteed.

As shown in fig. 1, the bottom of the inner wall 2 is located below the ground line 1, and the bottom of the inner wall 2 is provided with a laterally protruding enlarged end. The nearly mountain side at inside wall 2 top is provided with the bellied limiting plate 13 that makes progress, and the nearly mountain side of precast beam board 3 sets up in the limiting plate 13 inboard at inside wall 2 top.

Precast beam slab 3 is the bar shaped plate, adopts reinforced concrete structure, arranges interior side wall 2 and outer support top in through the hoist and mount mode in, splices into overall structure.

As shown in figure 1, a ditch 11 and a cable trough 12 are arranged in the cavity, and the inner side of the bottom of the inner side wall 2 and the inner side of the lower longitudinal beam 6 are arranged. Wherein, the bottom of interior limit wall 2 is enlarged the end and is located the inboard of interior limit wall 2 bottom, and the inboard ditch 11 in interior limit wall 2 bottom and cable duct 12 are located the top of enlarging the end for the enlarged end not only has the spacing firm effect to interior limit wall 2, still can regard as the place the platform of ditch 11 and cable duct 12, makes spatial layout more reasonable compact.

The utility model discloses a relate to special outside wall structure in tunnel open cut tunnel structure, for the integrated configuration form of longeron with the stand about last, guaranteeing to protect comprehensively under the prerequisite of falling the stone, to a great extent has reduced the use amount of material, reduces engineering cost.

It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.

Claims

1. The utility model provides a tunnel column formula open cut tunnel structure which characterized in that:

the structure comprises an inner side wall (2), a precast beam plate (3) and an outer support;

the inner side wall (2) is vertically erected on the side close to the mountain, the outer support is vertically erected on the side far away from the mountain, and the precast beam plates (3) are horizontally arranged on the tops of the inner side wall (2) and the outer support;

the outer support is a latticed support system and comprises a pile foundation (7), a lower longitudinal beam (6), an upright post (5) and an upper longitudinal beam (4) from bottom to top, wherein the pile foundation (7) is positioned below a ground line (1);

and backfill (10) is filled on the outer side of the inner side wall (2) and the top of the precast beam slab (3).

2. A tunnel pillar type open cut tunnel structure according to claim 1, wherein:

the bottom of the inner side wall (2) is positioned below the ground line (1), and the bottom of the inner side wall (2) is provided with a transverse convex expansion end.

3. A tunnel pillar type open-cut tunnel structure according to claim 2, characterized in that:

limiting plates (13) protruding upwards are arranged on the side, close to the mountain, of the top of the inner side wall (2), and the side, close to the mountain, of the precast beam plate (3) is arranged on the inner side of the limiting plates (13) on the top of the inner side wall (2).

4. A tunnel pillar type open-cut tunnel structure according to claim 3, characterized in that:

the pile foundations (7) are vertically arranged in a column at the far mountain side in the longitudinal direction;

the lower longitudinal beam (6) is positioned at the top of the pile foundation (7) and is longitudinally and horizontally arranged;

the upright posts (5) are positioned above the lower longitudinal beam (6), are vertically arranged in a row in the longitudinal direction and correspond to the pile foundations (7) below one by one;

the upper longitudinal beam (4) is positioned at the top of the upright post (5) and is longitudinally and horizontally arranged.

5. The tunnel pillar type open cut tunnel structure according to claim 4, wherein:

the remote mountain side at the top of the upper longitudinal beam (4) is provided with an upward convex soil retaining plate (8), and the remote mountain side of the precast beam plate (3) is arranged on the inner side of the soil retaining plate (8) at the top of the upper longitudinal beam (4).

6. The tunnel pillar open-cut tunnel structure according to claim 5, wherein:

and the inner side of the bottom of the inner side wall (2) and the inner side of the lower longitudinal beam (6) are respectively provided with a ditch (11) and a cable trough (12).

7. The tunnel pillar type open cut tunnel structure according to claim 6, wherein:

the bottom of interior side wall (2) is enlarged and is held the inboard that is located interior side wall (2) bottom, and ditch (11) and cable duct (12) that interior side wall (2) bottom is inboard are located the top of enlarging the end.

8. A tunnel pillar type open cut tunnel structure according to claim 7, wherein:

and the top surface of the precast beam slab (3) is provided with a waterproof layer (9) which is covered by backfill soil (10).